1.

Which of the following chemical is responsible for the stains on silver?(a) Hydrogen peroxide(b) Hydrogen sulfide(c) Sulfur dioxide(d) Sulfur trioxideThis question was addressed to me in a national level competition.Query is from Eight Forms topic in division Eight Forms of Corrosion of Corrosion Engineering

Answer»

Right choice is (b) HYDROGEN sulfide

To elaborate: The stains on SLIVER is USUALLY due to the presence of hydrogen sulfide. It can be removed by the application of galvanic CORROSION. It can be done with silver-aluminum galvanic attachment in the presence of BAKING soda.



Discussion

No Comment Found

Related InterviewSolutions